What is this thing about Voledmort though? I keep seeing it in the threads but I have no knowledge of this...

From what I have managed to gather, there was a bug with one of the Shields. Namely, it gained the Shield Regeneration Rate of every Shield that was in your inventory and add them all collectively to its own. So if you had multiple Shields in your inventory, it could regenerate thousands or more points of Shield Strength each cycle. Hence it was dubbed the Voldemort, the cursed shield that could not be stopped.